main.c (b8012648b38274aa996f1477c422a79e2d44110b) main.c (be04f210f954bed8663943a94ece50c2ca410231)
1/*
2 * qemu bsd user main
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2013-14 Stacey Son
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by

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47#include "trace/control.h"
48#include "crypto/init.h"
49#include "qemu/guest-random.h"
50
51#include "host-os.h"
52#include "target_arch_cpu.h"
53
54int singlestep;
1/*
2 * qemu bsd user main
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2013-14 Stacey Son
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by

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47#include "trace/control.h"
48#include "crypto/init.h"
49#include "qemu/guest-random.h"
50
51#include "host-os.h"
52#include "target_arch_cpu.h"
53
54int singlestep;
55unsigned long mmap_min_addr;
56uintptr_t guest_base;
57bool have_guest_base;
55uintptr_t guest_base;
56bool have_guest_base;
57/*
58 * When running 32-on-64 we should make sure we can fit all of the possible
59 * guest address space into a contiguous chunk of virtual host memory.
60 *
61 * This way we will never overlap with our own libraries or binaries or stack
62 * or anything else that QEMU maps.
63 *
64 * Many cpus reserve the high bit (or more than one for some 64-bit cpus)
65 * of the address for the kernel. Some cpus rely on this and user space
66 * uses the high bit(s) for pointer tagging and the like. For them, we
67 * must preserve the expected address space.
68 */
69#ifndef MAX_RESERVED_VA
70# if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
71# if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \
72 (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32))
73/*
74 * There are a number of places where we assign reserved_va to a variable
75 * of type abi_ulong and expect it to fit. Avoid the last page.
76 */
77# define MAX_RESERVED_VA (0xfffffffful & TARGET_PAGE_MASK)
78# else
79# define MAX_RESERVED_VA (1ul << TARGET_VIRT_ADDR_SPACE_BITS)
80# endif
81# else
82# define MAX_RESERVED_VA 0
83# endif
84#endif
85
86/*
87 * That said, reserving *too* much vm space via mmap can run into problems
88 * with rlimits, oom due to page table creation, etc. We will still try it,
89 * if directed by the command-line option, but not by default.
90 */
91#if HOST_LONG_BITS == 64 && TARGET_VIRT_ADDR_SPACE_BITS <= 32
92unsigned long reserved_va = MAX_RESERVED_VA;
93#else
58unsigned long reserved_va;
94unsigned long reserved_va;
95#endif
59
60static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
61const char *qemu_uname_release;
62enum BSDType bsd_type;
63char qemu_proc_pathname[PATH_MAX]; /* full path to exeutable */
64
65unsigned long target_maxtsiz = TARGET_MAXTSIZ; /* max text size */
66unsigned long target_dfldsiz = TARGET_DFLDSIZ; /* initial data size limit */

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434
435 if (getenv("QEMU_STRACE")) {
436 do_strace = 1;
437 }
438
439 target_environ = envlist_to_environ(envlist, NULL);
440 envlist_free(envlist);
441
96
97static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
98const char *qemu_uname_release;
99enum BSDType bsd_type;
100char qemu_proc_pathname[PATH_MAX]; /* full path to exeutable */
101
102unsigned long target_maxtsiz = TARGET_MAXTSIZ; /* max text size */
103unsigned long target_dfldsiz = TARGET_DFLDSIZ; /* initial data size limit */

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471
472 if (getenv("QEMU_STRACE")) {
473 do_strace = 1;
474 }
475
476 target_environ = envlist_to_environ(envlist, NULL);
477 envlist_free(envlist);
478
479 if (reserved_va) {
480 mmap_next_start = reserved_va;
481 }
482
442 {
443 Error *err = NULL;
444 if (seed_optarg != NULL) {
445 qemu_guest_random_seed_main(seed_optarg, &err);
446 } else {
447 qcrypto_init(&err);
448 }
449 if (err) {

--- 68 unchanged lines hidden --- 		483 {
484 Error *err = NULL;
485 if (seed_optarg != NULL) {
486 qemu_guest_random_seed_main(seed_optarg, &err);
487 } else {
488 qcrypto_init(&err);
489 }
490 if (err) {

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